影响人工种植牙-骨界面应力分布规律因素的多元逐步回归分析  

MULTIVARIATE STEP REGRESSION ANALYSIS OF INFLUENCING FACTORS ON THE STRESS DISTRIBUTION PATTERNS AT THE BONE INTERFACE AROUND DENTAL IMPLANTS

作　　者：邹敬才[1] 刘宝林[2] 唐文杰[1] 肖光裕[1] 

机构地区：[1]第四军医大学唐都医院口腔科 [2]第四军医大学口腔医学院颌面外科,西安710038

出　　处：《医用生物力学》2000年第4期216-221,共6页Journal of Medical Biomechanics

摘　　要：目的：为了探讨人工种植牙－骨界面应力分布规律。方法：应用三维有限元和多元逐步回归分析方法，对影响骨界面应力分布的一些因素，根据种植牙颈周骨内应力值进行了统计分析。结果：找出了影响种植牙周骨界面应力分布的主要因素，建立了回归方程，揭示了不同影响因素与颈部应力分布规律间的数量关系。结论：影响种植牙周颈部骨内应力和大小的最主要因素是悬臂梁的存在、多个种植牙上部结构杆的连接及受力角度的改变。单个种植牙种植时，影响颈周应力集中是载荷角度的改变。PURPOSE: To investigate the stress distribution patterns at the bone interface around dental implants. MATERIALS AND METHODS: Using three-dimension finite element method and multivariate step regression analysis, authors analyzed influencing factors on the stress distribution patterns at the bone interface based on the stress magnitudes surrounding dental implant neck. RESULTS: Finding the vital influencing factors of stress distribution patterns at the bone interface around dental implants, obtaining the regression equation, revealing the quantity's relation between the varieties' factors and the stress distribution patterns at the bone interface around dental implant neck. CONCLUSIONS: Cantilever, superstructure bar connecting with the implants and loading angles were the vital important factors of influencing the stress magnitudes at the bone interface around dental implants. When implanting a dental fixture the loading angles were the most important one influencing the stress magnitudes at the bone interface.

关 键 词：人工种植牙 骨界面 应力分布 多元逐步回归分析 

分 类 号：R783.6[医药卫生—口腔医学] R318.01[医药卫生—临床医学]